Knobbling-furnace.



No. 874,038. PATENTED DEC. 17, 190'7.

' W. SHARP.

KNOBBLING FURNAGE.

APPLIUATION FILED PEB. 3, 1906.

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NUNITED sTATEs PATENT oEEIoE.

WILLIAM SHARP, OF MCKEESPORT, PENNSYLVANIA.

KNOBB LING-FURNACE To all whom 'it may concern:

Be it known that I, WILLIAM SHARP, a citizen of the United States,residing at 108 Sixth street, McKeesport, in the county of Allegheny andState of Pennsylvania, have invented certain new and useful Improvementsin Knobbling-Furnaces, of which the following is a speciiication.

This invention relates to knobbling or blooinery furnaces. Furnaces ofthis type are provided with what are known in the art as merit platesarranged in the side walls thereof and provided with openings for thetwyers. Owing to the position of these plates in the furnace walls andtheir close proximity to the twyers, they are subjected to an intenseheat and the character of plate commonly employed soon cruinbles andbecomes unfit for use.

The main object of the present invention is to so improve theconstruction of such plates that they can better withstand the injuriousel'li'ect of the intense heat to which they are subjected. and thusprolong their time of usefulness.

To this end a convenient embodiment of the invention comprises theconstruction and arrangement of parts hereinafter described, illustratedin the accompanying drawings, and particularly pointed out in the claimshereto appended.

In the. drawings, Figure 1 is a view of a knobbling furnace equippedwith my improved form of merit plate. Fig. 2 is a detail view of themerit plate.

Referring to the drawings in detail, wherein like reference charactersdesignate corresponding parts throughout the several views, 1 designatesa knobbling furnace provided with the usual openings 2 in the side wallsthereof for the reception of the merit plates.

3 designates my improved form of merit plate, which is substantiallyflat and rectangular in shape andiis provided with the usualseini-circular twyer opening Il at the base thereof. The plate 3, (whichis adapted to be removably fitted in one of the openings 2 and whichwhen so placed forms a part of v the furnace wall) is formed with aninterior channel 5 curved to conform to the twyer opening around whichit extends to opposite sides thereofand communicates with openings 6 and7 leading to the front face 8 of said plate. The channel 5 is providedin order that water may be caused to circulate through the plate 3,whereby the same will Specification of Letters Patent. Applicationiilefl February 3. 1906. Serial No. 299.310.

Patented Dec. 17, 1907.

be cooled and the injurious action of the heat on said plate will beretarded, thus prolonging its life. With this idea in view, nipples 9and 10 are fitted in the openings 6 and 7 and to the nipple 9 isconnected one end of a iiexible conduit 11, the other end of which isconnected with a water main 12, the water passing from the main throughthe conduit 11 and thence through the channel 5 to the opening 7from'whicli it is conveyed by a flexible conduit 13 to any suitablewaste but the water after passing through the channel 5 is preferablyfurther employed as a cooling medium by connecting the conduit 13 withthe water jacket 14 of the adjacent twyer 15, from which it is run offthrough a conduit 16. This latter arrangement is particularly to bedesired as the amount of pipe and the number of connections arelessened, thus decreas` ing the liability of leakage, the amount of timenecessary to connect up the water systemand obviating the disadvantagesto the workman arising from employing a multiplicity of pipes around themerit plate. A further advantage is attained by employing the flexibleconduits as the merit plates may be removed from the openings in thefurnace wall and the twyers adjusted in or removed from the twyeropenings in order to clear the same of adhering cinders or clinkerswithout making a break in the system, so that the water supply does nothave to be out oif.

It will be understood that various changes in the construction andarrangement of arts hereinbefore described may be made wit out departingfrom the spirit or sacrificing any of the advantages of the invention.

What I claim is In combination with a knobbling furnace, having anopening in one of its walls for the reception of a merit plate, a meritplate formed complementary to said opening for insertion thereinto and(withdrawal therefrom, said merit plate having a conduit formed in theinterior thereof adjacent to a twyer opening therethrough, said conduithaving forwardly directed extensions opening to the exterior of themerit plate, a double walled twyer having a chamber between.

the walls thereof closed at its ends and having an inlet and an outletopening, said twyer being formed for insertion into and withdrawal fromthe-twyer opening in the merit plate, a fixed water supply pipe, anelongated iiexible pipe connection connected to and forming a passagefrom said fixed supply pipe to one of the forwardly opening extensionso'l` the conduit in the interior of the merit plate, an elongatedflexible pipe connection connected to and forming a passage between theother of said forwardly directed extensions of said conduit and theinlet opening of the chamber surrounding the twyer, and a discharge pipeleading from the outlet opening of said chamber, said lexible pipeconnections being of a length greater than the normal distance betweenthe parts with which they communicate, whereby the merit plate and twyermay be adjusted relative to the fixed supply pipe, and the twyer andmerit plate adjusted relative to each other l5 while maintaining acontinuous communicating passage Jfrom said supply pipe through themerit plate and twyer to the discharge pipe leading from the twyer.

In testimony whereof I have signed my 2O name to this specilication inthe presence of two subscribing witnesses.

, WILLIAM SHARP.

Witnesses:

WILLIAM A. NELSON, ROBT. G. KINNEY.

